The only stamp Czeslaw Slania has engraved for Estonia is a joint issue between Sweden and the three Baltic Countries, Estonia, Latvia and Lithuania. Although Slania has only engraved the stamp in the top row to the right. Same design for booklets from Latvia and Lithuania.
03.10.1992. Baltic Sea National Preserved Area. These are the birds:
Top row: Osprey (Pandion Haliaetus), and Black-tailed Godwit («Limosa Limosa»)
Bottom row: Goosander («Mergus Merganser») and Common Shelducks («Tadorna Tadorna»).